How do I turn on the signature view function?

[1986 Buick GX1]

Hi guys,
I have not been able to see signatures in posts for quite a while on my IPhone 5 or laptop.
Is there something on the site to turn on or is this something with my phone and computer?

Thank you,
George

 

[TurboBuRick]

You have to be signed in to see signatures.

 

[1986 Buick GX1]

My avitar photo and user id are displayed in the upper right hand corner.
Does it show that I'm not signed in?

 

[T-CHRGD]

Turn your phone sideways.